US7407002B2 - Air conditioner and outdoor unit therefor - Google Patents

Air conditioner and outdoor unit therefor Download PDF

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Publication number
US7407002B2
US7407002B2 US10/720,212 US72021203A US7407002B2 US 7407002 B2 US7407002 B2 US 7407002B2 US 72021203 A US72021203 A US 72021203A US 7407002 B2 US7407002 B2 US 7407002B2
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Prior art keywords
refrigerant
outdoor
path
way valve
compressor
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Expired - Lifetime, expires
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US10/720,212
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English (en)
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US20040226711A1 (en
Inventor
Sae-Dong Jang
Il-Nahm Hwang
Jin-Seob Song
Bong-Soo Park
Dong-Jun Yang
Ho-Jong Jeong
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LG Electronics Inc
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LG Electronics Inc
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Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HWANG, IL-NAHM, JANG, SAE-DONG, JEONG, HO-JONG, PARK, BONG-SOO, SONG, JIN-SEOB, YANG, DONG-JUN
Publication of US20040226711A1 publication Critical patent/US20040226711A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0211—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0232—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses
    • F25B2313/02322—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with bypasses during defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0251—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units being defrosted alternately
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—Component parts or details not otherwise provided for in this subclass
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/04—Desuperheaters

Definitions

  • the present invention relates to an air conditioner performing heating or cooling by using a heat pump cycle, and more particularly, to an air conditioner provided with an outdoor unit and performing its own defrosting operation at the time of heating.
  • an air conditioner is a device for controlling temperature, humidity, current, and cleanliness of air for comfortable indoor circumstances.
  • the air conditioner is divided into an integral type air conditioner for accommodating both an indoor unit and an outdoor unit in a single case, and a separated type air conditioner for constituting a compressor and a condenser as an outdoor unit and constituting an evaporator as an indoor unit.
  • an air conditioner for both heating and cooling which can selectively perform heating and cooling by switching a refrigerant path with a four-way valve.
  • the multi-type air conditioner provided with a plurality of indoor units for heating or cooling according to each indoor space is being used.
  • the multi-type air conditioner is provided with a plurality of compressors or a plurality of outdoor units connected to each other in parallel in order to effectively perform heating or cooling correspondingly to the number of the indoor units.
  • FIG. 1 is a schematic view showing one embodiment of an air conditioner in accordance with the conventional art.
  • the conventional air conditioner is divided into an indoor unit 11 and an outdoor unit 21 , and the indoor unit 11 is composed of an indoor heat exchanger 13 for heat-exchanging a refrigerant indoors and an indoor expansion device 15 for depressurization-expanding a refrigerant.
  • the outdoor unit 21 is composed of a compressor 23 for compressing refrigerant gas, an outdoor heat exchanger 33 for heat-exchanging a refrigerant with external air, a four-way valve 31 adjacently arranged to the compressor 23 for circulating a compression refrigerant discharged from the compressor 23 according to a heating cycle or a cooling cycle, an accumulator 35 arranged at an inlet of the compressor 23 for filtering a liquefied refrigerant, a first refrigerant path 41 for connecting the outdoor heat exchanger 33 to the indoor unit 11 , and a second refrigerant path 42 for connecting the four-way valve 31 to the indoor unit 11 .
  • an oil separator 22 for separating oil, an oil returning path 29 for recycling oil separated by the oil separator 22 into the compressor 23 , and a check valve 27 for preventing a backflow of a refrigerant are installed between an outlet of the compressor 23 and the four-way valve 31 .
  • a receiver 37 for temporarily receiving a refrigerant and a drier 39 for removing moisture included in a refrigerant are installed in the middle of the first refrigerant path 41 , and service valves 45 a and 45 b are respectively installed at the first and second refrigerant paths 41 and 42 .
  • Both heating and cooling are operated in said conventional air conditioner.
  • a refrigerant compressed in the compressor 23 is introduced into the outdoor heat exchanger 33 by an operation of the four-way valve 31 , and the refrigerant which has passed through the outdoor heat exchanger 33 is introduced into the indoor expansion device 15 and the indoor heat exchanger 13 of the indoor unit 11 through the first refrigerant path 41 .
  • the refrigerant which has passed through the indoor unit 11 is introduced into the four-way valve 31 through the second refrigerant flow 42 , and the refrigerant which has passed through the four-way valve 31 passes through the accumulator 35 thus to be introduced into the compressor 23 . Accordingly, by said cooling cycle of a refrigerant, the cooling operation of the air conditioner is performed.
  • a refrigerant compressed in the compressor 23 passes through the indoor expansion device 15 and the indoor heat exchanger 13 of the indoor unit 11 through the second refrigerant path 42 by the four-way valve 31 , and a refrigerant discharged from the indoor unit 11 is introduced into the outdoor heat exchanger 33 through the firs refrigerant path 41 .
  • the refrigerant which has passed through the outdoor heat exchanger 33 passes through the four-way valve 31 and the accumulator 35 thus to be introduced into the compressor 23 . Accordingly, by said heating cycle of a refrigerant, the heating operation of the air conditioner is performed.
  • a defrosting cycle of a refrigerant for performing the defrosting operation is formed of a reverse cycle of the heating cycle like the cooling cycle.
  • FIG. 2 is a schematic view showing another embodiment of the air conditioner in accordance with the conventional art.
  • a plurality of outdoor units 21 having the same structure as the aforementioned embodiment are installed in parallel in order to enhance efficiency of the air conditioner in case that a great cooling/heating capacity is required.
  • each outdoor unit 21 is connected to main paths 48 and 47 for introducing and discharging a refrigerant into the indoor unit 11 thus to perform cooling and heating operations.
  • a refrigerant which has performed the defrosting operation of the outdoor heat exchanger 33 passes through the indoor expansion device 15 and the indoor heat exchanger 13 of the indoor unit 11 . Accordingly, when the defrosting operation is performed after stopping the heating operation, a refrigerant which circulates through the indoor expansion device 15 and the indoor heat exchanger 13 during the heating operation is at once reversely circulated thus to cause noise of the indoor unit 11 .
  • an object of the present invention is to provide an air conditioner capable of preventing noise generated indoors by preventing a refrigerant from being introduced into an indoor unit by constituting a defrosting cycle so that a refrigerant can circulate in an outdoor unit itself at the time of a defrosting operation of the outdoor unit, and an outdoor unit therefor.
  • Another object of the present invention is to provide an air conditioner capable of consecutively performing a heating operation of an indoor unit and preventing an indoor heat loss by constructing each outdoor unit to separately perform defrosting and heating operations in case that a plurality of outdoor units are arranged by preventing a refrigerant from being introduced into the indoor unit by constructing a defrosting cycle so that the refrigerant can circulate in the outdoor unit itself at the time of defrosting operation of the outdoor unit, and an outdoor unit therefor.
  • an air conditioner comprising an outdoor unit and an indoor unit provided with an indoor heat exchanger and an indoor expansion device, wherein the outdoor unit comprises a compressor for compressing a refrigerant; an outdoor heat exchanger for heat-exchanging a refrigerant; a four-way valve adjacently arranged to the compressor for circulating a refrigerant discharged from the compressor according to a heating cycle or a cooling cycle; a refrigerant detouring path for detouring a refrigerant discharged from the outdoor heat exchanger to the compressor at the time of a defrosting operation; an outdoor expansion device installed in the middle of the detouring path for reducing a pressure of a refrigerant which flows in the refrigerant detouring path; and a heat exchanging device installed in the middle of the detouring path for heat-exchanging between a refrigerant introduced from the outdoor expansion device and a refrigerant
  • an outdoor unit for an air conditioner comprising a compressor; an outdoor heat exchanger for heat-exchanging a refrigerant with external air; a four-way valve adjacently arranged to the compressor for circulating a refrigerant according to a heating cycle or a cooling cycle; a first refrigerant path for connecting the outdoor heat exchanger to an indoor unit; a second refrigerant path for connecting the four-way valve to the indoor unit; a refrigerant detouring path connected to the first refrigerant path by a first three-way valve and connected to the second refrigerant path by a second three-way valve for detouring a refrigerant at the time of a defrosting cycle; an outdoor expansion device installed in the middle of the refrigerant detouring path for lowering a pressure of a refrigerant which flows in the refrigerant detouring path; and a heat exchanging
  • FIG. 1 is a schematic view showing one embodiment of an air conditioner in accordance with the conventional art
  • FIG. 2 is a schematic view showing another embodiment of the air conditioner in accordance with the conventional art
  • FIG. 3 is a schematic view showing one embodiment of an air conditioner according to the present invention.
  • FIG. 4 is a sectional view showing a heat exchanging device of the air conditioner according to one embodiment of the present invention.
  • FIG. 5 is a schematic view showing another embodiment of the air conditioner according to the present invention.
  • the air conditioner according to one embodiment of the present invention is composed of a plurality of indoor units 11 constituted with an indoor heat exchanger 13 for heat-exchanging a refrigerant and an indoor expansion device 15 and arranged in parallel, and an outdoor unit 121 .
  • the outdoor unit 121 and the indoor units 11 are connected to each other by a connection pipe.
  • the outdoor unit 121 comprises a compressor 23 for compressing refrigerant gas, an outdoor heat exchanger 33 for heat-exchanging a refrigerant with external air, a four-way valve 31 adjacently arranged to the compressor 23 for circulating a refrigerant according to a heating cycle or a cooling cycle, an accumulator 35 arranged at an inlet of the compressor 23 for filtering a liquefied refrigerant, a first refrigerant path 41 for connecting the outdoor heat exchanger 33 to an indoor unit 11 , a second refrigerant path 42 for connecting the four-way valve 31 to the indoor unit 11 , a refrigerant detouring path 51 connected to the first refrigerant path 41 by a first three-way valve 57 and connected to the second refrigerant path 42 by a second three-way valve 59 for detouring a refrigerant at the time of a defrosting cycle, an outdoor expansion device 53 installed in the middle of the refrigerant detouring path 51 for lowering a pressure of
  • the heat exchanging device 55 is formed of a heat conducting coil which winds the refrigerant detouring path 51 , and the outdoor expansion device 53 is formed of an electron expansion valve.
  • an oil separator 22 for separating oil, an oil returning path 29 for recycling oil separated by the oil separator 22 into the compressor 23 , and a check valve 27 for preventing a backflow of a refrigerant are installed between an outlet of the compressor 23 and the four-way valve 31 .
  • a receiver 37 for temporarily receiving a refrigerant and a drier 39 for removing moisture included in a refrigerant are installed in the middle of the first refrigerant path 41 , and service valves 45 a and 45 b are respectively installed at the first and second refrigerant paths 41 and 42 .
  • the heat exchanging device 55 includes an inlet portion 24 for introducing a refrigerant from the four-way valve 31 , a heat exchanging portion 26 extending from the inlet portion 24 with an expanded volume and for accommodating the refrigerant detouring path 51 therein, and an outlet portion 25 for discharging a refrigerant which has passed through the heat exchanging portion 26 to the outdoor heat exchanger 33 .
  • the refrigerant detouring path 51 is preferably formed as a curved pipe 52 of a zigzag shape in the heat exchanging portion 26 so that the refrigerant which has passed through the outdoor expansion device 53 and the refrigerant discharged from the compressor 23 can be smoothly heat-exchanged in the heat exchanging portion 26 of the heat exchanging device 55 .
  • the outdoor expansion device 53 is preferably formed of an electron expansion valve.
  • a refrigerant path is changed by a position control of the four-way valve 31 , thereby performing heating and cooling cycles. That is, at the time of the cooling cycle of the air conditioner, a refrigerant compressed in the compressor 23 passes through the four-way valve 31 thus to be introduced into the outdoor heat exchanger 33 . Then, the refrigerant passes through the indoor expansion device 15 and the indoor heat exchanger 13 through the first refrigerant path 41 , and then passes through the four-way valve 31 and the accumulator 35 through the second refrigerant path 42 thus to be introduced into the compressor 23 .
  • the heating cycle of the air conditioner is performed as a reverse cycle of the cooling cycle. That is, the refrigerant compressed in the compressor 23 passes through the second refrigerant path 42 by an operation of the four-way valve 31 , and the refrigerant discharged from the indoor unit 11 is introduced into the outdoor heat exchanger 33 through the first refrigerant path 41 . Also, the refrigerant which has passed through the outdoor heat exchanger 33 passes through the four-way valve 31 and the accumulator 35 thus to be introduced into the compressor 23 .
  • a defrosting cycle for removing frost generated at the heat exchanger 33 is operated.
  • the defrosting cycle is performed similarly to the cooling cycle, but the refrigerant which has passed through the outdoor heat exchanger is not introduced into the indoor unit through the first refrigerant path but passes through the refrigerant detouring path by the first and second three-way valves 57 and 59 thus to be introduced into the compressor 23 .
  • the refrigerant compressed in the compressor 23 passes through the four-way valve 31 thus to be introduced into the outdoor heat exchanger 33 , and the refrigerant discharged from the outdoor heat exchanger 33 passes through the first refrigerant path 41 and the first three-way valve 57 thus to be introduced into the refrigerant detouring path 51 .
  • the refrigerant is not introduced into the indoor unit 11 by the first three-way valve 57 .
  • the refrigerant which has passed through the first three-way valve 57 passes through the outdoor expansion device 53 and the heat exchanging device 55 and passes through the second three-way valve 59 thus to be introduced into the four-way valve 31 .
  • the refrigerant is not introduced into the second refrigerant path 42 by the second three-way valve 59 . Also, the refrigerant which has been introduced into the four-way valve 31 passes through the accumulator 35 thus to be introduced into the compressor 23 . In said defrosting cycle, the outdoor expansion device 53 and the heat exchanging device 55 serve as the indoor heat exchanger 13 and the indoor expansion device 15 of the indoor unit 11 .
  • the refrigerant which has passed through the outdoor heat exchanger 33 is not introduced into the indoor unit 11 but passes through the outdoor expansion device 53 and the heat exchanging device 55 by the refrigerant detouring path 51 thus to circulate in the compressor 23 at the time of the defrosting cycle, a noise generated from the indoor unit 11 is prevented.
  • the heat exchanging device 55 is provided with a simple structure that the refrigerant which has passed through the outdoor expansion device 53 and the refrigerant discharged from the compressor 23 are heat-exchanged to each other, heat exchange can be smoothly performed without an additional component such as a refrigerant heating device.
  • the air conditioner according to another embodiment of the present invention comprises a plurality of outdoor units 121 and 221 respectively including the compressor 23 and the outdoor heat exchanger 33 and arranged in parallel, and a plurality of indoor units 11 including the indoor heat exchanger 13 and the indoor expansion device 15 and arranged in parallel. Also, each outdoor unit is connected to each other through main paths 48 and 47 for introducing and discharging a refrigerant into the indoor units 11 .
  • the respective outdoor units 121 and 221 have similar structures and operations to the aforementioned one embodiment.
  • the outdoor unit 121 for performing the defrosting cycle is illustrated at the left side of FIG. 5
  • the outdoor unit 221 for performing the heating cycle is illustrated at the right side of FIG. 5 .
  • the defrosting operation for removing frost generated at the outdoor heat exchanger 33 , a refrigerant is not leaked to outside of the outdoor units 121 and 221 but circulates in the outdoor units 121 and 221 . Accordingly, even if the defrosting operation is performed at one outdoor unit of the plurality of outdoor units, the defrosting operation does not influence to other outdoor units or indoor units, thereby continuing the heating operation of the air conditioner.
  • the defrosting operation is performed in a state that the heating cycle is not stopped thus to prevent indoor heating loss.
  • the heat exchanging device is provided with a simple structure that the refrigerant which has passed through the outdoor expansion device and the refrigerant discharged from the compressor are heat-exchanged to each other, heat exchange can be smoothly performed without an additional component such as a refrigerant heating device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)
US10/720,212 2003-05-01 2003-11-25 Air conditioner and outdoor unit therefor Expired - Lifetime US7407002B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR28045/2003 2003-05-01
KR10-2003-0028045A KR100511287B1 (ko) 2003-05-01 2003-05-01 동시 제상 및 난방 운전이 가능한 공기조화기 및 자체제상 사이클을 구비한 공기조화기용 실외기

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US20040226711A1 US20040226711A1 (en) 2004-11-18
US7407002B2 true US7407002B2 (en) 2008-08-05

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US10/720,212 Expired - Lifetime US7407002B2 (en) 2003-05-01 2003-11-25 Air conditioner and outdoor unit therefor

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US (1) US7407002B2 (fr)
EP (1) EP1473526B1 (fr)
JP (1) JP2004333108A (fr)
KR (1) KR100511287B1 (fr)
CN (1) CN1328548C (fr)
DE (1) DE60336046D1 (fr)

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US20130091885A1 (en) * 2011-10-11 2013-04-18 Junseong Park Air conditioner
US10101043B2 (en) 2013-07-26 2018-10-16 Energy Design Technology & Solutions, Inc. HVAC system and method of operation
US20190063773A1 (en) * 2017-02-06 2019-02-28 Hitachi-Johnson Controls Air Conditioning, Inc. Outdoor unit for air conditioner, air conditioner, and method for controlling air conditioner

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CN100432580C (zh) * 2004-11-29 2008-11-12 乐金电子(天津)电器有限公司 一拖多空调器的压缩机循环系统
KR100682269B1 (ko) * 2005-10-05 2007-02-15 엘지전자 주식회사 열교환기 유닛 및 이를 구비한 공기조화장치
KR100820821B1 (ko) * 2006-12-26 2008-04-11 엘지전자 주식회사 공기조화 시스템
JP5258197B2 (ja) * 2007-01-16 2013-08-07 三菱電機株式会社 空気調和システム
JP4532517B2 (ja) * 2007-03-30 2010-08-25 ヤンマー株式会社 空調装置
JP4497234B2 (ja) * 2008-07-29 2010-07-07 ダイキン工業株式会社 空気調和装置
KR101686009B1 (ko) * 2009-01-16 2016-12-13 삼성전자주식회사 체크밸브 및 이를 포함하는 공기조화기
CN103123147A (zh) * 2013-03-27 2013-05-29 宁波奥克斯空调有限公司 一种多联机空调系统及其控制方法
JP2017026289A (ja) * 2015-07-28 2017-02-02 パナソニックＩｐマネジメント株式会社 空気調和装置
KR102517272B1 (ko) * 2016-11-02 2023-04-03 삼성전자주식회사 공기조화기
CN106595110B (zh) * 2016-12-30 2019-02-19 中原工学院 一种冷藏与冷冻用多循环复合系统
CN115234993B (zh) 2018-12-11 2023-10-27 三菱电机株式会社 空调装置
CN111795480B (zh) 2019-04-08 2023-08-22 开利公司 热循环系统和用于热循环系统的控制方法
CN115031428A (zh) * 2022-06-23 2022-09-09 深圳市艾特网能技术有限公司 多联空调系统

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JP2004333108A (ja) 2004-11-25
US20040226711A1 (en) 2004-11-18
KR100511287B1 (ko) 2005-08-31
CN1328548C (zh) 2007-07-25
KR20040094100A (ko) 2004-11-09
EP1473526A2 (fr) 2004-11-03
DE60336046D1 (de) 2011-03-31
EP1473526A3 (fr) 2005-09-07
EP1473526B1 (fr) 2011-02-16
CN1542341A (zh) 2004-11-03

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